2061604521630 has 48 divisors (see below), whose sum is σ = 5389786007424. Its totient is φ = 546723846720.

The previous prime is 2061604521629. The next prime is 2061604521631. The reversal of 2061604521630 is 361254061602.

2061604521630 is a `hidden beast` number, since 2 + 0 + 6 + 1 + 604 + 5 + 2 + 16 + 30 = 666.

It is an interprime number because it is at equal distance from previous prime (2061604521629) and next prime (2061604521631).

It is a super-2 number, since 2×2061604521630² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2061604521631) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 63261934 + ... + 63294513.

It is an arithmetic number, because the mean of its divisors is an integer number (112287208488).

Almost surely, 2^{2061604521630} is an apocalyptic number.

2061604521630 is an abundant number, since it is smaller than the sum of its proper divisors (3328181485794).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2061604521630 is a wasteful number, since it uses less digits than its factorization.

2061604521630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126556641 (or 126556638 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The spelling of 2061604521630 in words is "two trillion, sixty-one billion, six hundred four million, five hundred twenty-one thousand, six hundred thirty".